1*1e07a07bSmrg /* $NetBSD: string.h,v 1.14 2020/09/05 13:37:59 mrg Exp $ */ 22368dc66Stls 32368dc66Stls /*- 42368dc66Stls * Copyright (c) 2006 The NetBSD Foundation, Inc. 52368dc66Stls * All rights reserved. 62368dc66Stls * 72368dc66Stls * This code is derived from software contributed to The NetBSD Foundation 82368dc66Stls * by Christos Zoulas. 92368dc66Stls * 102368dc66Stls * Redistribution and use in source and binary forms, with or without 112368dc66Stls * modification, are permitted provided that the following conditions 122368dc66Stls * are met: 132368dc66Stls * 1. Redistributions of source code must retain the above copyright 142368dc66Stls * notice, this list of conditions and the following disclaimer. 152368dc66Stls * 2. Redistributions in binary form must reproduce the above copyright 162368dc66Stls * notice, this list of conditions and the following disclaimer in the 172368dc66Stls * documentation and/or other materials provided with the distribution. 182368dc66Stls * 192368dc66Stls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 202368dc66Stls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 212368dc66Stls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 222368dc66Stls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 232368dc66Stls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 242368dc66Stls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 252368dc66Stls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 262368dc66Stls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 272368dc66Stls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 282368dc66Stls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 292368dc66Stls * POSSIBILITY OF SUCH DAMAGE. 302368dc66Stls */ 312368dc66Stls #ifndef _SSP_STRING_H_ 322368dc66Stls #define _SSP_STRING_H_ 332368dc66Stls 3449bf923aSpooka #include <sys/cdefs.h> 35dc99372bStls #include <ssp/ssp.h> 362368dc66Stls 371890a6a2Sjoerg __BEGIN_DECLS 381890a6a2Sjoerg void *__memcpy_chk(void *, const void *, size_t, size_t); 39*1e07a07bSmrg void *__memmove_chk(void *, const void *, size_t, size_t); 401890a6a2Sjoerg void *__memset_chk(void *, int, size_t, size_t); 418c38ca6aSchristos char *__stpcpy_chk(char *, const char *, size_t); 421890a6a2Sjoerg char *__strcat_chk(char *, const char *, size_t); 431890a6a2Sjoerg char *__strcpy_chk(char *, const char *, size_t); 441890a6a2Sjoerg char *__strncat_chk(char *, const char *, size_t, size_t); 451890a6a2Sjoerg char *__strncpy_chk(char *, const char *, size_t, size_t); 461890a6a2Sjoerg __END_DECLS 471890a6a2Sjoerg 482368dc66Stls #if __SSP_FORTIFY_LEVEL > 0 492368dc66Stls 502368dc66Stls #define __ssp_bos_check3(fun, dst, src, len) \ 512368dc66Stls ((__ssp_bos0(dst) != (size_t)-1) ? \ 522368dc66Stls __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)) : \ 532368dc66Stls __ ## fun ## _ichk(dst, src, len)) 542368dc66Stls 552368dc66Stls #define __ssp_bos_check2(fun, dst, src) \ 562368dc66Stls ((__ssp_bos0(dst) != (size_t)-1) ? \ 572368dc66Stls __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)) : \ 582368dc66Stls __ ## fun ## _ichk(dst, src)) 592368dc66Stls 602368dc66Stls #define __ssp_bos_icheck3_restrict(fun, type1, type2) \ 612368dc66Stls static __inline type1 __ ## fun ## _ichk(type1 __restrict, type2 __restrict, size_t); \ 622368dc66Stls static __inline __attribute__((__always_inline__)) type1 \ 632368dc66Stls __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src, size_t len) { \ 642368dc66Stls return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 652368dc66Stls } 662368dc66Stls 672368dc66Stls #define __ssp_bos_icheck3(fun, type1, type2) \ 682368dc66Stls static __inline type1 __ ## fun ## _ichk(type1, type2, size_t); \ 692368dc66Stls static __inline __attribute__((__always_inline__)) type1 \ 702368dc66Stls __ ## fun ## _ichk(type1 dst, type2 src, size_t len) { \ 712368dc66Stls return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \ 722368dc66Stls } 732368dc66Stls 742368dc66Stls #define __ssp_bos_icheck2_restrict(fun, type1, type2) \ 752368dc66Stls static __inline type1 __ ## fun ## _ichk(type1, type2); \ 762368dc66Stls static __inline __attribute__((__always_inline__)) type1 \ 772368dc66Stls __ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src) { \ 782368dc66Stls return __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)); \ 792368dc66Stls } 802368dc66Stls 812368dc66Stls __BEGIN_DECLS 822368dc66Stls __ssp_bos_icheck3_restrict(memcpy, void *, const void *) 832368dc66Stls __ssp_bos_icheck3(memmove, void *, const void *) 842368dc66Stls __ssp_bos_icheck3(memset, void *, int) 85a7e83216Schristos __ssp_bos_icheck2_restrict(stpcpy, char *, const char *) 86f731ef5aSpooka #if __GNUC_PREREQ__(4,8) || defined(__clang__) 8733b986a6Schristos __ssp_bos_icheck3_restrict(stpncpy, char *, const char *) 88f731ef5aSpooka #endif 892368dc66Stls __ssp_bos_icheck2_restrict(strcpy, char *, const char *) 902368dc66Stls __ssp_bos_icheck2_restrict(strcat, char *, const char *) 912368dc66Stls __ssp_bos_icheck3_restrict(strncpy, char *, const char *) 922368dc66Stls __ssp_bos_icheck3_restrict(strncat, char *, const char *) 932368dc66Stls __END_DECLS 942368dc66Stls 952368dc66Stls #define memcpy(dst, src, len) __ssp_bos_check3(memcpy, dst, src, len) 962368dc66Stls #define memmove(dst, src, len) __ssp_bos_check3(memmove, dst, src, len) 972368dc66Stls #define memset(dst, val, len) __ssp_bos_check3(memset, dst, val, len) 988c38ca6aSchristos #define stpcpy(dst, src) __ssp_bos_check2(stpcpy, dst, src) 99ca3d5866Spooka #if __GNUC_PREREQ__(4,8) || defined(__clang__) 10033b986a6Schristos #define stpncpy(dst, src, len) __ssp_bos_check3(stpncpy, dst, src, len) 10149bf923aSpooka #endif 1022368dc66Stls #define strcpy(dst, src) __ssp_bos_check2(strcpy, dst, src) 1032368dc66Stls #define strcat(dst, src) __ssp_bos_check2(strcat, dst, src) 1042368dc66Stls #define strncpy(dst, src, len) __ssp_bos_check3(strncpy, dst, src, len) 1052368dc66Stls #define strncat(dst, src, len) __ssp_bos_check3(strncat, dst, src, len) 1062368dc66Stls 1072368dc66Stls #endif /* __SSP_FORTIFY_LEVEL > 0 */ 1082368dc66Stls #endif /* _SSP_STRING_H_ */ 109